Square D Q1B390 3 Pole Circuit Breaker
The Square D Q1B390 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 90 Amps and a voltage rating of 240VAC. It has an interrupting rating of 10kAIC at 240V. The Q1B390 has a bolt-on connection type and includes long time and instantaneous trip functions.